KR950012786B1 - Lpm panel and method of making same - Google Patents

Abstract

A panel such as a partitioned panel or a ceiling panel is manufactured by a thermal pressing LPM(low pressed melamine) resin on the surface of an outer panel. Thus, a pattern is printed on the surface of the paper sheet(1), the sheet(1) is impregnated in a mixed solution of 50-60 wt % of melamine resin and 40-50 wt % of urea resin. Obtained sheet is coated with a mixed solution of 30-40 wt. % of melamine resin and 60-70 wt. % of formaline, dried and cut. The pattern sheet(6) is heat pressed with an inorganic panel(7) by a heat press(8) at 150-170 degree C, 10-20 kg/cm2 pressure for 7-8 min to give the LPM panel.

Description

Plate for building materials using L.P.M. and its manufacturing method

1 is a process chart showing a manufacturing method of the present invention.

2 is a cross-sectional view showing an example of the use of the plate for building materials of the present invention.

* Explanation of symbols for main parts of the drawings

1: paper sheet 2: pattern

3,6 pattern sheet 7 substrate

8: heat press

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building material sheet and a method for manufacturing the same, which are integrally formed by thermocompression bonding L.P.M. (Low Pressed Melamine Resin) onto the surface of an outer plate used in a building material such as a partition panel and a panyl for a ceiling member.

In the related art, general panel-type building materials are mostly used as the surface plate material in the form of inorganic materials such as bamite, gypsum board and calcium silicate board.

As such, building materials using surface plates of inorganic materials are excellent in thermal insulation or soundproofing due to the characteristics of the inorganic materials used as surface members, but the surface texture is not good. Therefore, paint is applied to the surface after construction of the panel or a separate sheet such as wallpaper. There is a problem that the finishing treatment must be performed by bonding the members. In addition, even if the finish treatment as described above, if the contamination caused by dust or other foreign substances on the surface after a long period of time, due to the characteristics of the surface portion can not be properly cleaned or cleaned, so in the end should be done in double or triple again There is a hassle to do.

In addition, there is an uneconomical aspect, such as waste of unnecessary materials and unnecessary manpower.

The present invention has been made to solve such a conventional problem, the building material plate material integrally formed by thermally compressing the LPM on the board-shaped plate surface made of a material that is used as a panel-type building material and When the surface plate material prepared by the present invention is used in the production of building materials such as a partition panel or ceiling member, the LPM is already formed on the surface when the building materials are directly manufactured in the field. As a result, the surface state can maintain a beautiful surface by LPM even if the finishing process such as paint coating or wallpaper is not performed. It is easy to clean properly and regularly so that you can always be beautiful and semi-permanent While it is an object to use as to be able to produce a clean indoor atmosphere.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. The inventors of the present invention will be described with reference to FIG. 1 by process.

[Step 1]

A process of obtaining a pattern sheet (3) by printing in advance a pattern (2) in the form of a pattern to be expressed on the surface of a paper sheet (1). It is done in the same way as printing (refer to (a) and (b) of FIG. 1).

[Step 2]

In the process of impregnating the melamine resin in the pattern sheet (3) printed in the first step, the pattern is easy in the liquid tank (4) containing 50-60 wt% of melamine resin and 40-50 wt% of urea resin. It is a process of coating the surface of the pattern sheet (3) impregnated with the solution which impregnated the (3) and mixed 30-40 weight% of melamine resin and 60-70 weight% of formalin (FIG.1 (c) and (D) of FIG. 1).

At this time, the liquid melamine resin penetrates into the inside of the pattern sheet 3 and remains in a thin film form on the surface thereof.

[Step 3]

In the second step, the pattern sheet 5 impregnated and coated with melamine resin is dried, and the irregular patterned end formed at the edge of the dried pattern sheet 5 is cut to complete the pattern sheet 6. It is a process of obtaining (refer to (e) of FIG. 1).

At this time, the drying step of the pattern sheet 5 is preferably carried out by hot air drying of about 150 ℃.

[Step 4]

The pattern sheet 6 obtained in the third step and the substrate 7 of the inorganic material prepared separately are placed so as to overlap each other. Maintain −170 ° C. and allow thermal bonding at a pressure of 10-20 Kg / Cm ² for 7-8 minutes (see Figure 1 (f)).

In this case, instead of the heat press 8, a heating press roller 9 may be used. In this case, the pressure and temperature to pressurize are the same as in the case of the heat press 8 described above, and the pattern sheet 6 and the substrate 7 In this overlapping state, it is preferable to maintain the feed rate passing through the heating and pressing roller 9 about 30-40 cm / min (refer to (g) of FIG. 1).

When the heat bonding is performed as described above, the substrate 7 may be a building material such as chestnut, gypsum board, calcium silicate board as an inorganic material, and is formed on the pattern sheet 6 after the heat bonding is performed as described above. In the molten state, the existing melamine resin partially penetrates through the internal pores of the substrate 7, and the pattern sheet 6 and the substrate 7 are integrally bonded, and part of the melamine resin is impregnated inside the pattern sheet 6. And the rest is cured while melting on the surface of the pattern sheet 6, and the surface hardening treatment is performed with the pattern intact while maintaining a smooth texture, thereby forming the LPM layer (s). (See (h) in FIG. 1).

As described in (i) of FIG. 1, melamine resin penetrates into the inside of the substrate 7 so that the plate material P of the present invention completed through the first to fourth processes as described above may be patterned. The sheet 6 is integrally and firmly bonded, and a thermosetting surface thin film layer 11 in the form of a thin film is formed thereon, and the surface thin film layer 11 including the pattern sheet 6 is formed on the substrate 7. The LPM layer s formed is integrally formed with the substrate 7.

Such a building material plate P is used for ceiling members as shown in FIG. 2 (a) of FIG. 2 or as shown in FIG. 2 (b) of FIG. It can be applied to the residual material 30, but not shown, if any building material using a plate in the surface portion can be used by appropriately applied.

Therefore, the present inventors building material plate (P) is already used for building materials, since the LPM layer (S) is already formed in the form of building material plate (P) on the surface, it does not require a separate finishing treatment after site construction, and is convenient and surface. The other side can maintain the beautiful surface shape by the LPM layer (S), and the nature of the LPM layer (S) made of a thermosetting melamine resin is easy to wash or clean the surface to produce a clean indoor atmosphere while using semi-permanently.

In addition, in the manufacturing method of the present invention, in the impregnation process of the melamine resin, the impregnation and coating of the melamine resin can be performed more surely impregnation of the pattern sheet (3) to maintain a clear pattern (2) by heat pressing By the melamine resin penetrates into the substrate 7 and the surface thin film layer 11 is formed on the surface of the pattern sheet 6, a smooth surface treatment is performed by the heat press 8 or the heating press roller 9. It can have an excellent effect such as.

Claims (3)

Melamine resin penetrates into the substrate 7 and the pattern sheet 6 is integrally and firmly bonded. A thermosetting surface thin film layer 11 in the form of a thin film is formed on the substrate 7 so that the pattern sheet is formed on the substrate 7. A plate for building materials using LPM, characterized in that the LPM layer (S) consisting of the surface thin film layer (11) including the sheet (6) is formed integrally with the substrate (7). The pattern 2 was printed on the surface of the paper sheet 1, and the printed pattern sheet 3 was impregnated into a solution in which 50-60% by weight of melamine resin and 40-50% by weight of urea resin were mixed. Surface coating is performed with a solution of 30-40% by weight of resin and 60-70% by weight of formalin, followed by drying and cutting. The finished pattern sheet 6 is overlaid with the substrate 7 of an inorganic material, and heat-pressed ( 8) according to the temperature of 10-20Kg / ㎠ at a pressure of 150-170 ℃ for 7-8 minutes by heat compression is completed the manufacturing method of the sheet material for full-span material using LPM. The pattern sheet (10) according to claim 2, wherein a heating press roller (9) is used instead of the heat press (8) at a speed of 30-40 cm / min under a pressure of 10-20 Kg / cm < 2 > 6) and the method of manufacturing a plate for building materials using LPM, characterized in that the transfer to the substrate 7 in the overlapping state at the same time.